Pateick e



(No Model.)

P. R. GREENE.

BEER PUMP.

Patented Mar. 30

m m 5 m H.

ATTORNEYS.

o-Liflwgrapher, Washington. 0. cl

' UNITED STATES PATENT OFFICE,

PATRICK R. GREENE, OF BROOKLYN, NEWV YORK.

BEER-PUMP.

SPECIFICATION forming part of Letters Patent No. 338,838, dated March 30, 1886.

Application filed October 20, 1885. Serial No. 180,432. (No model.)

To all whom it may concern:

Be it known that I, PATRICK R. GREENE, of Brooklyn, in the county of Kings and State of New York, have invented a new and Improved Beer-Iump, of which the following is a full, clear, and exact description.

The object of my invention is to provide a non-corrosive pump for drawing beer and other malt liquors; and the invention consists of the construction, arrangement, and combination of parts, all as hereinafter described and claimed.

Reference is to be had to the accompanying drawing, forming part of this specification, in which the figure isalongitudinal sectional elevation of my new and improved beer-pump.

The pump cylinder or chamber A, in which the piston B works, is of glass. To the induction end of the cylinder A is secured the mounting O, of brass or other inexpensive metal. This is lined upon the inside with the shell D, of block-tin, which projects into the tube 0 to the internallyscrew-threaded portion, 0, thereof, and reaches at its outer edge to the internally-screw-threaded outer flange, c of the mounting O, the shell D being formed with the central tubular portion, d, and surrounding circular plate or flange d for that purpose. The mounting O is secured to the cylinder A preferably by being screwed upon the eXternally-screw-threaded ring, E, fitted upon the end of the cylinder. The induction-pipe F is attached to the mounting G by the coupling G, screwed into the screwthreaded portion a of the mounting. The coupling G is lined with a shell, H, of blocktin formed with the tubular portion h and flange h, which covers the inner end of the coupling so that when the coupling is screwed in place the flange h will join and be pressed against the lower end of the tubular portion d of the shell D, and thus entirely prevent the liquor from coming in contact with the metal composing the coupling and mounting. The inner end of the coupling G and shell H is slightly enlarged and rounded to form a cup, a, that constitutes the seat for the induction-valve ball b, which is of glass or similar non-corrosive material.

To the opposite or eduction end of the glass cylinder A is secured the mounting I, of brass or other inexpensive metal. This,

like the mounting O, is held by being screwed upon the ring J, secured upon the cylinder. The mounting I is lined with a shell, K, of block-tin, which is formed with the chambered portion 7a and surrounding flange 70, which reaches to the internallyscrew-threaded flange of the mounting, so that when the mounting I is screwed upon the ring J the flange 70' will be pressed firmly against the end of the glass cylinderA and form a liquidtight joint therewith.

The eduction pipe L is screwed into a screw-threaded aperture, 70', made through the coupling I and shell K, as shown in the drawmg.

The piston-head B is made of block-tin, and the central aperture, Z, thereof is made concaved or in cup form to receive the ball-valve Z, which is of glass or other non-corrosive material. The ball Z is held in place by the spider B, attached to the piston-head over the aperture Z, and the piston-rod B is attached to this spider, as shown. The pistonrod B works through the mounting I and shell K, and is surrounded by a stuffing-box, M, formed at the outer end of the mounting I to prevent leakage.

Thelining-shells D H K, of tin, are molded, spun, or pressed into form and accurately fit the mountings of cheap metal, and are so formed that when the parts composing the pump are assembled the shells D K not only cover the interior of the mountings, which would otherwise be exposed to the liquor, but form liquid-tight joints with the ends of the glass cylinder A. The shell H also forms a liquid-tight joint with the shell D, so that the liquor passing through thepump will come in contact only with glass and tin which will not contaminate it. Furthermore, the pump is cheap and practical, and may be easily taken apart for cleaning and as easily put together again.

Having thus described my invention, what I claim as new, and desire to secure by Letters Patent, is

1. The cylinder A, provided at its ends with the externally-screw-threaded rings, in combination with metal mountings provided upon the inside with shells of non-corrosive metal having flanges of greater diameter than the cylinder, so that when the mountings are screwed to place liquid-tight joints will be metal, and formed with thetubular portion h formed between the cylinder and the non-corand flange h, to join the lower end of the tu- 1o rosive shells, substantially as described. bular portion d of the shell D, substantially 2. The combination, with the glass cylinas and for the purposes set forth. 5 der A and mounting 0, having the shell D, of PATRICK R. GREENE.

non-corrosive meta1,formed with the tubular Witnesses: 7 portion (1 and flange d, of the coupling G, H. A. WEST,

provided with the lining H, of non-corrosive O. SEDGWIOK. 

